{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/containerd/containerd"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.7.29"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/containerd/containerd/v2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.0.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/containerd/containerd/v2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.1.0-beta.0"
            },
            {
              "fixed": "2.1.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/containerd/containerd/v2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.2.0-beta.0"
            },
            {
              "fixed": "2.2.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2024-25621"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-279"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-11-06T15:12:08Z",
    "nvd_published_at": "2025-11-06T19:15:40Z",
    "severity": "HIGH"
  },
  "details": "### Impact\n\nAn overly broad default permission vulnerability was found in containerd.\n\n- `/var/lib/containerd` was created with the permission bits 0o711, while it should be created with 0o700\n  - Allowed local users on the host to potentially access the metadata store and the content store\n- `/run/containerd/io.containerd.grpc.v1.cri` was created with 0o755, while it should be created with 0o700\n  - Allowed local users on the host to potentially access the contents of Kubernetes local volumes. The contents of volumes might include setuid binaries, which could allow a local user on the host to elevate privileges on the host.\n- `/run/containerd/io.containerd.sandbox.controller.v1.shim` was created with 0o711, while it should be created with 0o700\n\nThe directory paths may differ depending on the daemon configuration.\nWhen the `temp` directory path is specified in the daemon configuration, that directory was also created with 0o711, while it should be created with 0o700.\n\n### Patches\n\nThis bug has been fixed in the following containerd versions:\n\n* 2.2.0\n* 2.1.5\n* 2.0.7\n* 1.7.29\n\nUsers should update to these versions to resolve the issue.\nThese updates automatically change the permissions of the existing directories.\n\n\u003e [!NOTE]\n\u003e\n\u003e `/run/containerd` and `/run/containerd/io.containerd.runtime.v2.task` are still created with 0o711.\n\u003e This is an expected behavior for supporting userns-remapped containers.\n\n### Workarounds\n\nThe system administrator on the host can manually chmod the directories to not \nhave group or world accessible permisisons:\n\n```\nchmod 700 /var/lib/containerd\nchmod 700 /run/containerd/io.containerd.grpc.v1.cri\nchmod 700 /run/containerd/io.containerd.sandbox.controller.v1.shim\n```\n\nAn alternative mitigation would be to run containerd in [rootless mode](https://github.com/containerd/containerd/blob/main/docs/rootless.md).\n\n### Credits\n\nThe containerd project would like to thank David Leadbeater for responsibly disclosing this issue in accordance with the [containerd security policy](https://github.com/containerd/project/blob/main/SECURITY.md).\n\n### For more information\n\nIf you have any questions or comments about this advisory:\n\n* Open an issue in [containerd](https://github.com/containerd/containerd/issues/new/choose)\n* Email us at [security@containerd.io](mailto:security@containerd.io)\n\nTo report a security issue in containerd:\n\n* [Report a new vulnerability](https://github.com/containerd/containerd/security/advisories/new)",
  "id": "GHSA-pwhc-rpq9-4c8w",
  "modified": "2025-11-06T23:12:26Z",
  "published": "2025-11-06T15:12:08Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/containerd/containerd/security/advisories/GHSA-pwhc-rpq9-4c8w"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-25621"
    },
    {
      "type": "WEB",
      "url": "https://github.com/containerd/containerd/commit/7c59e8e9e970d38061a77b586b23655c352bfec5"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/containerd/containerd"
    },
    {
      "type": "WEB",
      "url": "https://github.com/containerd/containerd/blob/main/docs/rootless.md"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "containerd affected by a local privilege escalation via wide permissions on CRI directory"
}